Answer:
(x+3)(x+2)
Step-by-step explanation:
I can't explain it well, but I call it "reverse foil."
Answer:
86 books
Step-by-step explanation:
A stack of books is 43 inches tall.
Each book is
inch thick.
To find the number of books in tha stack, divide the height of the stack by the height of the book:
![43:\dfrac{1}{2}](https://tex.z-dn.net/?f=43%3A%5Cdfrac%7B1%7D%7B2%7D)
The division by the fraction
is equivalent to the multiplication by the fraction
so
![43:\dfrac{1}{2}=43\cdot \dfrac{2}{1}=43\cdot 2=86](https://tex.z-dn.net/?f=43%3A%5Cdfrac%7B1%7D%7B2%7D%3D43%5Ccdot%20%5Cdfrac%7B2%7D%7B1%7D%3D43%5Ccdot%202%3D86)
The correct answer is 2.5×10^2
Hope this helped :)